audio HAL V7.1: add latency mode control APIs

Bug: 187446271
Test: make
Change-Id: Ib6ee708d312e4e630637d8b7fb92fda4854590aa
(cherry picked from commit afa586b221a01a345538d7d2d34f836f6cf50730)
Merged-In: Ib6ee708d312e4e630637d8b7fb92fda4854590aa
4 files changed